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#!/usr/bin/php
<?php
function error($message)
{
file_put_contents('php://stderr', $message."\n");
}
function notice($message)
{
file_put_contents('php://stdin', $message."\n");
}
function filter(array $data, array $default)
{
foreach ($data as $k => $v) {
if (!array_key_exists($k, $default)) {
unset($data[$k]);
} elseif (is_array($default[$k]) && !is_array($v)) {
$data[$k] = (array) $v;
}
}
foreach ($default as $k => $v) {
if (!array_key_exists($k, $data)) {
$data[$k] = $v;
}
}
return $data;
}
function filterScreen(array $data)
{
$default = [
'name' => null,
'resolutionX' => null,
'resolutionY' => null,
'dpi' => null,
'xrandr_extra' => null,
];
return filter($data, $default);
}
function filterMode(array $data)
{
$default = [
'config' => [],
'primary' => null,
'before_command' => null,
'after_command' => null,
];
$data = filter($data, $default);
foreach ($data['config'] as $k => $v) {
$v = explode(',', $v);
$v = array_map('trim', $v);
$data['config'][$k] = $v;
}
return $data;
}
function getCurrentModeFile()
{
return sys_get_temp_dir().'/monitordisplay.tmp';
}
function getCurrentMode()
{
$currentModeFile = getCurrentModeFile();
if (file_exists($currentModeFile)) {
$currentMode = (array) @parse_ini_file($currentModeFile);
} else {
$currentMode = [];
}
return filter($currentMode, [
'mode' => null,
'config' => null,
]);
}
function build(array $modes, array $screens, $mode, $toggle, array $currentMode, $addOff)
{
if (null === $mode) {
if (!array_key_exists($currentMode['mode'], $modes)) {
return;
}
$tmpMode = $currentMode['mode'];
$mode = $modes[$currentMode['mode']];
} else {
if (!array_key_exists($mode, $modes)) {
return;
}
$tmpMode = $mode;
$mode = $modes[$mode];
}
if (false !== $toggle) {
$configs = $mode['config'];
$configsKeys = array_keys($configs);
if (null === $currentMode['mode']) {
$currentMode['config'] = $configsKeys[0];
}
if (!array_key_exists($currentMode['config'], $mode['config'])) {
$currentMode['config'] = $configsKeys[0];
}
if (true === $toggle) {
foreach ($configsKeys as $k => $key) {
if ($key == $currentMode['config']) {
$currentKey = $k;
}
}
$config = $configsKeys[($currentKey + 1) % count($configsKeys)];
} elseif (array_key_exists($toggle, $configs)) {
$config = $toggle;
} else {
error(sprintf('Invalid config "%s"', $toggle));
die(1);
}
} else {
$config = array_keys($mode['config'])[0];
}
if (!array_key_exists($config, $mode['config'])) {
return;
}
$tmpConfig = $config;
$config = $mode['config'][$config];
$command = ['xrandr'];
$x = 0;
$screensUsed = [];
foreach ($config as $screen) {
if (!array_key_exists($screen, $screens)) {
return;
}
$tScreen = $screens[$screen];
$name = $tScreen['name'];
$resolutionX = $tScreen['resolutionX'];
$resolutionY = $tScreen['resolutionY'];
$dpi = $tScreen['dpi'];
$xrandrExtra = $tScreen['xrandr_extra'];
if (empty($name) || empty($resolutionX) || empty($resolutionY)) {
error(sprintf('Invalid screen configuration "%s"', $screen));
die(1);
}
$command[] = '--output';
$command[] = escapeshellarg($name);
$screensUsed[] = $name;
if ($mode['primary'] === $name) {
$command[] = '--primary';
}
if (null !== $dpi) {
$command[] = sprintf('--dpi %d', $dpi);
}
$command[] = '--mode';
$command[] = sprintf('%dx%d', $resolutionX, $resolutionY);
$command[] = '--pos';
$command[] = sprintf('%dx%d', $x, 0);
$x += (int) $resolutionX;
if (null !== $xrandrExtra) {
$command[] = $xrandrExtra;
}
}
if ($addOff) {
foreach ($screens as $screen) {
if (!in_array($screen['name'], $screensUsed)) {
$command[] = '--output';
$command[] = escapeshellarg($screen['name']);
$command[] = '--off';
}
}
}
$command = implode(' ', $command);
return [
'config' => sprintf("mode=%s\nconfig=%s", $tmpMode, $tmpConfig),
'command' => $command,
'mode' => $mode,
];
}
$files = [
'/etc/monitordisplay/config.ini',
getenv('HOME').'/.config/monitordisplay/config.ini',
getenv('HOME').'/.monitordisplay',
];
$config = [];
$currentMode = getCurrentMode();
foreach ($files as $file) {
if (file_exists($file)) {
$parsing = @parse_ini_file($file, true);
if (false === $parsing) {
error(sprintf('The file "%s" is not a valid ini file', $file));
continue;
}
notice(sprintf('Configuration file merged: %s', $file));
$config = array_merge(
$config,
$parsing
);
}
}
if (empty($config)) {
error('No configuration found');
error(sprintf('Paths checked: \n%s', implode(', ', $files)));
die(1);
}
$screens = [];
$modes = [];
foreach ($config as $section => $values) {
$type = explode(':', $section);
if (2 !== count($type)) {
error(sprintf('Invalid section "%s". Ignored', $section));
}
if ('screen' === $type[0]) {
$screens[$type[1]] = filterScreen($values);
} elseif ('mode' === $type[0]) {
$modes[$type[1]] = filterMode($values);
} else {
error(sprintf('Section "%s" ignored', $section));
}
}
if (empty($screens)) {
error('No screen found');
die(1);
}
if (empty($modes)) {
error('No mode found');
die(1);
}
$options = getopt('m:t::sn');
$mode = isset($options['m']) ? $options['m'] : null;
$toggle = isset($options['t']) ? (false === $options['t'] ? true : $options['t']) : false;
$addOff = !isset($options['s']);
$isTest = isset($options['n']);
$build = build($modes, $screens, $mode, $toggle, $currentMode, $addOff);
if (!empty($build)) {
file_put_contents(getCurrentModeFile(), $build['config']);
$commands = [
$build['mode']['before_command'],
$build['command'],
$build['mode']['after_command'],
];
$output = [];
if ($isTest) {
$output[] = 'Mode TEST';
}
foreach ($commands as $command) {
if (!empty($command)) {
$output[] = 'Command: '.$command;
if (!$isTest) {
exec($command, $output);
}
}
}
notice(implode("\n", $output));
die(0);
}
error(sprintf('Invalid mode "%s"', $mode));
die(1);